Analisa Perhitungan Manual Setelah Kebakaran Perhitungan Momen Tahanan Balok Memanjang Lantai 3 9,3 m .1 Tumpuan Perhitungan Momen Tahanan Balok Melintang Lantai 3 7,3 m .1 Tumpuan

4.3.5 Analisa Perhitungan Manual Setelah Kebakaran

Data-data yang didapat setelah kebakaran yaitu: 1 fc’ kolom = 8,575 Nmm 2 2 fc’ balok = 9,424 Nmm 2 3 Tulangan utama Ø 25 mm : a � y = 339,44 Nmm 2 b � u = 534,15 Nmm 2 4 Tulangan sengkang Ø 10 mm : a � y = 305,51 Nmm 2 b � u = 430,15 Nmm 2 5 Jumlah tulangan: a. Balok Memanjang 90x40 cm Tumpuan Lapangan b. Balok Melintang 90x40 cm Tumpuan Lapangan c. Kolom 80x50 cm 4.3.6 Perhitungan Momen Tahanan Balok Memanjang Lantai 3 9,3 m 4.3.6.1 Tumpuan Mu = -310,4461 KNm As = 4 D 22 = 4 x 3,14 x 11 2 = 1519,76 mm 2 As’ = 3 D 22 = 3 x 3,14 x 11 2 = 1139,82 mm 2 b = 400 mm h = 900 mm d’ = 50 mm d = h – d’ = 900 mm – 50 mm = 850 mm fc’ = 9,424 Nmm 2 fy s = 339,44 Nmm 2 � = �� �.� = 1519,76 mm 2 400 mm x 850 mm = 0,0044699 �′ = ��′ �.� = 1139,82 mm 2 400 mm x 850 mm = 0,0033524 � � = ��−� ′ �.�� � 0,85.�1.��′ = 0,0044699 − 0,0033524 � 339,44 Nmm 2 0,85 � 0,85 � 9,424 Nmm 2 � � = 0,055711 �� ∅.�.� 2 = � ′ . �� � . ρ � ′ − 1. 1 - 0,425. � � + 1 – �′ � �� = {� ′ . �� � . ρ � ′ − 1. 1 - 0,425. � � + 1 – �′ � } . ∅. �. � 2 Mr = {0,0033524 � 339,44 Nmm 2 x 0,0044699 0,0033524 − 1 x 1 - 0,425 x 0,055711 + 1 – 50 mm 850 mm } x 0,8 x 400 mm x 850 mm 2 Mr = 303,2233 KNm

4.3.6.2 Lapangan

Mu = 218,5744 KNm As = 4 D 22 = 4 x 3,14 x 11 2 = 1519,76 mm 2 As’ = 3 D 22 = 3 x 3,14 x 11 2 = 1139,82 mm 2 b = 400 mm h = 900 mm d’ = 50 mm d = h – d’ = 900 mm – 50 mm = 850 mm fc’ = 9,424 Nmm 2 fy s = 339,44 Nmm 2 � = �� �.� = 1519,76 mm 2 400 mm x 850 mm = 0,0044699 �′ = ��′ �.� = 1139,82 mm 2 400 mm x 850 mm = 0,0033524 �� ∅.�.� 2 = ∅. � . �� � . 1 - 0,588. � . �� � ��′ �� = {∅. � . �� � . 1 - 0,588. � . �� � ��′ } . ∅. �. � 2 Mr = {0,8 x 0,0044699 x 339,44 Nmm 2 x 1 – 0,588 x 0,0044699 x 339,44 Nmm 2 9,424 Nmm 2 } x 0,8 x 400 mm x 850 mm 2 Mr = 254,0659 KNm 4.3.7 Perhitungan Momen Tahanan Balok Melintang Lantai 3 7,3 m 4.3.7.1 Tumpuan Mu = -310,4461 KNm As = 3 D 22 = 3 x 3,14 x 11 2 = 1139,82 mm 2 As’ = 2 D 22 = 2 x 3,14 x 11 2 = 759,88 mm 2 b = 400 mm h = 900 mm d’ = 50 mm d = h – d’ = 900 mm – 50 mm = 850 mm fc’ = 9,424 Nmm 2 fy s = 339,44 Nmm 2 � = �� �.� = 1139,82 mm 2 400 mm x 850 mm = 0,00335242 �′ = ��′ �.� = 759,88 mm 2 400 mm x 850 mm = 0,00223494 � � = ��−� ′ �.�� � 0,85.�1.��′ = 0,00335242 − 0,00223494 � 339,44 Nmm 2 0,85 � 0,85 � 9,424 Nmm 2 � � = 0,0557096 �� ∅.�.� 2 = � ′ . �� � . ρ � ′ − 1. 1 - 0,425. � � + 1 – �′ � �� = {� ′ . �� � . ρ � ′ − 1. 1 - 0,425. � � + 1 – �′ � } . ∅. �. � 2 Mr = {0,00223494 � 339,44 Nmm 2 x 0,00335242 0,00223494 − 1 x 1 - 0,425 x 0,0557096 + 1 – 50 mm 850 mm } x 0,8 x 400 mm x 850 mm 2 Mr = 303,2218 KNm

4.3.7.2 Lapangan

Mu = 218,5744 KNm As = 3 D 22 = 3 x 3,14 x 11 2 = 1139,82 mm 2 As’ = 2 D 22 = 2 x 3,14 x 11 2 = 759,88 mm 2 b = 400 mm h = 900 mm d’ = 50 mm d = h – d’ = 900 mm – 50 mm = 850 mm fc’ = 9,424 Nmm 2 fy s = 339,44 Nmm 2 � = �� �.� = 1139,82 mm 2 400 mm x 850 mm = 0,00335242 �′ = ��′ �.� = 759,88 mm 2 400 mm x 850 mm = 0,00223494 �� ∅.�.� 2 = ∅. � . �� � . 1 - 0,588. � . �� � ��′ �� = {∅. � . �� � . 1 - 0,588. � . �� � ��′ } . ∅. �. � 2 Mr = {0,8 x 0,00335242 x 339,44 Nmm 2 x 1 – 0,588 x 0,00335242 x 339,44 Nmm 2 9,424 Nmm 2 } x 0,8 x 400 mm x 850 mm 2 Mr = 195,5305 KNm

4.3.8 Perhitungan Gaya Geser Tahanan Balok Utama Lantai 3 90x40 cm